CN201960714U - Slow ejection structure with complex structure and multiple pitched roof products - Google Patents
Slow ejection structure with complex structure and multiple pitched roof products Download PDFInfo
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- CN201960714U CN201960714U CN2011200717444U CN201120071744U CN201960714U CN 201960714 U CN201960714 U CN 201960714U CN 2011200717444 U CN2011200717444 U CN 2011200717444U CN 201120071744 U CN201120071744 U CN 201120071744U CN 201960714 U CN201960714 U CN 201960714U
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- push rod
- mold
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Abstract
The utility model discloses a slow ejection structure with a complex structure and multiple pitched roof products, which belongs to the field of injection molding and molding molds for plastic parts. A step limiting hole is formed at a position on an ejection base plate corresponding to a straight carrier rod; a slow ejection limiting pin is arranged in the step limiting hole, and is connected with the lower end face of the straight carrier rod; and a fixed mold is arranged on a movable mold to form a plastic part molding cavity. By adopting the slow ejection structure, the straight carrier rod at a position where a molded plastic part is weak or multiple ribs and posts are arranged in the mold is slowly ejected temporarily, so that appearance defective products with roof deformation or ejection marks caused by high stress are avoided. Meanwhile, the conventional 'secondary ejection mechanism' which causes complex mold structure and greatly increase in the cost of the mold is not adopted. The innovation has a unique revealing effect and high practical value for the same type of plastic products in the fields of mold structures and injection molding.
Description
Technical field
The utility model belongs to working of plastics injection moulding, mould category, and is particularly a kind of complex-shaped and have a slow ejecting structure of many places oblique top goods.
Background technology
In injection moulding process, forming shape complexity, and the working of plastics (as shown in Figure 1) of band many places angle ejector rod when ejecting, must be told precedence.This type of working of plastics is owing to need to adopt local more (as shown in Figure 2) of angle ejector rod moulding, if ejecting action just at the beginning moment, all push rods that comprise straight push rod move simultaneously, appearing at angle ejector rod does not probably break away from before the constraint fully, other weak local straight push rods can or eject trace 10, (as shown in Figure 3) the distortion of plastic top.Because the shaping angle ejector rod in the process of ejecting, is not just to break away from the constraint of its moulding section to it, need a bit of time.During this period, by the place of angle ejector rod moulding, angle ejector rod there is relatively the effect (as shown in Figure 3) of " draw, drag " in the working of plastics, this moment, if straight push rod and its at other positions move simultaneously, eject trace otherwise can produce in the place of working of plastics weakness, influence products appearance.In automobile industry, with the form of injection moulding processing, use volume in a large number, and have many plastic products that need be shaped with angle ejector rod than the macrostructure complexity.Yet, how to solve this type of working of plastics, ejecting in the process of injection mo(u)lding, what take place to produce because of conditioning each other ejects the unbalance stress phenomenon and produces a large amount of outward appearance defective works thus, is a technical barrier of the numerous producers of puzzlement all the time.
The producer that produces this series products generally adopts following method for addressing this problem in mould structure and injection molding process at present:
1. polish the angle ejector rod position of mould repeatedly, the power of holding tightly when attempting to reduce the depanning of this position.
2. increase the diameter that the weak place of plastic goes out push rod, attempt to reduce this part when ejecting, push rod is to the pressure of plastic.
3. reduce cool time, reduce dwell pressure, attempt to make plastic before depanning, to keep maximum toughness.
4. adopt complicated " secondary ejecting mechanism ".
First three methods in the above method than the macrostructure complexity, has many plastic products that need be shaped with angle ejector rod for the shaping volume, improvement is to a certain degree arranged, but still do not obtain basic solution.No matter the 4th kind of method though can reach a solution of a problem, in the mould manufacturing still is injection molding process, all can improve its complexity and production cost greatly.Therefore, how high-efficiency and low-cost production need be with angle ejector rod complicated, the medium-and-large-sized plastic products that are shaped, and satisfy its appearance requirement, are the automobile industry questions of common concern.
The utility model content
The purpose of this utility model is in the prior art, in injection moulding process, and the forming shape complexity, and the working of plastics of band many places angle ejector rod needs straight push rod, angle ejector rod simultaneously, coordination when ejecting, otherwise can produce in the place of working of plastics weakness and eject trace or distortion, influence products appearance.Ejecting in the process of injection mo(u)lding, what take place to produce because of conditioning each other ejects the unbalance stress phenomenon, produce the deficiency of a large amount of outward appearance defective works thus, and propose a kind of complex-shaped and have a slow ejecting structure of many places oblique top goods, it is characterized in that, open a step spacing hole at the position that ejects corresponding straight push rod on the backing plate, delay to eject spacer pin and be placed in the step spacing hole, and be connected with straight push rod lower surface; In dynamic model, the shape of corresponding working of plastics in position is provided with straight push rod and angle ejector rod guide through hole, and after straight push rod and angle ejector rod passed guide through hole, by push rod fixed head location, push rod fixed head and push rod backing plate were fixed and be placed on the moving clamping plate.
Place cover half above the described dynamic model, form the plastic piece shaping chamber.
But beneficial effect of the present utility model is the very simply very reliable mould that is primarily aimed at medium-and-large-sized and baroque plastic products two designs, make in die sinking moment, allow the straight push rod in die for molding working of plastics weakness or muscle, the more place of post, temporarily delay to eject, after having carried out a bit of time Deng ejecting of angle ejector rod, make it eject again, make working of plastics weakness or muscle post at first not painstaking like this, avoid this place because of the stressed bad order product that causes the top distortion more greatly or eject trace than many places.Not only solved in the automobile industry these type of plastic products in injection moulding is produced,, adopted simultaneously to make mould structure become complicated, the tradition that die cost greatly improves " secondary ejecting mechanism " because of the open defect that the unmanageable problem of ejecting produces.This innovation for similar plastic products, in mould structure and injection moulding field, has unique inspiration effect and far-reaching practical value.
Description of drawings
Fig. 1 is for needing the complex structure working of plastics schematic diagram with many places moulding angle ejector rod.
Fig. 2 is traditional working of plastics injection moulding, mould schematic diagram.
Fig. 3 causes working of plastics distortion schematic diagram during for traditional working of plastics injection moulding, mould die sinking.
Fig. 4 is equipped with working of plastics injection moulding, the mould schematic diagram that delays to eject spacer pin.
Fig. 5 for Fig. 4 when just beginning to eject, straight push rod temporarily delays the view that ejects.
Fig. 6 for the straight push rod of Fig. 4 just temporarily delay to eject after and and the angle ejector rod view of moving simultaneously.
The specific embodiment
The utility model proposes a kind of complex-shaped and have a slow ejecting structure of many places oblique top goods.Illustrated below in conjunction with accompanying drawing.
Delay to eject in the working of plastics injection moulding, mould schematic diagram of spacer pin in shown in Figure 4 being equipped with, open a step spacing hole 11 at the position that ejects corresponding straight push rod 4 on the backing plate 7, delay to eject spacer pin 9 and be placed in the step spacing hole 11, and be connected with straight push rod 4 lower surfaces; In dynamic model 3, the shape of corresponding working of plastics 2 in position is provided with the guide through hole of straight push rod 4 and angle ejector rod 5, after straight push rod 4 and angle ejector rod 5 pass guide through hole, by the push rod fixed head, 6 location, push rod fixed head 6 and push rod backing plate 7 are fixing, and are placed on the moving clamping plate 8.
When working of plastics injection moulding, moulding, place cover half 1 above the dynamic model 3, form the forming cavity of working of plastics 2.
When injection machine just begins to eject, utilize the resistance between straight push rod of mould and the jogger hole, the straight push rod at this place is not moved earlier, make straight push rod 4 end faces of weak part and working of plastics 2 surfaces produce slit 12, weak part stress (as shown in Figure 5) alone can not appear
Along with the continuation that ejects, the step that delaying below the straight push rod 4 eject spacer pin 9 is run into and is ejected the spacing of backing plate 7, and straight push rod 4 is setting in motions.At this moment, angle ejector rod 5 has moved a bit of time, will soon remove the constraint of working of plastics to it.Along with the continuation that ejects action, all push rods all have been able to eat power, the stressed alone situation of straight push rod 4 of weak part can not occur.Therefore, plastic can trace or distortion not occur ejecting at weak part, influences outward appearance.
The described size (promptly with the gap that ejects limited step in the backing plate 7) that delays to eject the activity of spacer pin 9 is decided by angle ejector rod 5.It is that segment distance (as shown in Figure 6) that angle ejector rod will be walked in advance.Make the straight push rod 4 that acts on the plastic weak part in the mould, in the moment that ejects beginning, have one to delay, make angle ejector rod 5 earlier to plastic generation effect, then, the straight push rod 4 of weakness is setting in motion again.At this moment, because the push rod at other positions has all played effect, the vulnerable area of plastic can be not excessive because of being subjected to ejecting force, ejects trace and produce, and influences products appearance.
Claims (2)
- One kind complex-shaped and have the slow ejecting structure of many places oblique top goods, it is characterized in that, open a step spacing hole at the position that ejects corresponding straight push rod on the backing plate, delay to eject spacer pin and be placed in the step spacing hole, and be connected with straight push rod lower surface; In dynamic model, the shape of corresponding working of plastics in position is provided with straight push rod and angle ejector rod guide through hole, and after straight push rod and angle ejector rod passed guide through hole, by push rod fixed head location, push rod fixed head and push rod backing plate were fixed and be placed on the moving clamping plate.
- 2. described a kind of complex-shaped and have the slow ejecting structure of many places oblique top goods according to claim 1, it is characterized in that, place cover half above the described dynamic model, form the plastic piece shaping chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200717444U CN201960714U (en) | 2011-03-17 | 2011-03-17 | Slow ejection structure with complex structure and multiple pitched roof products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200717444U CN201960714U (en) | 2011-03-17 | 2011-03-17 | Slow ejection structure with complex structure and multiple pitched roof products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201960714U true CN201960714U (en) | 2011-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200717444U Expired - Lifetime CN201960714U (en) | 2011-03-17 | 2011-03-17 | Slow ejection structure with complex structure and multiple pitched roof products |
Country Status (1)
| Country | Link |
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| CN (1) | CN201960714U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009583A (en) * | 2012-12-19 | 2013-04-03 | 盐城纺织职业技术学院 | Mould for ejecting mechanism of divided-board type ejector sleeve |
| CN104290315A (en) * | 2014-09-28 | 2015-01-21 | 苏州华冲精密机械有限公司 | Novel core-pulling and demoulding mechanism of vacuum plastic suction mould for liner of refrigerator |
| CN104943072A (en) * | 2015-06-30 | 2015-09-30 | 贾玉平 | Plastic injection mold for forming deep-rib products |
| CN107599325A (en) * | 2017-09-14 | 2018-01-19 | 上海小糸车灯有限公司 | A kind of secondary ejecting mechanism in lamp housing mould |
-
2011
- 2011-03-17 CN CN2011200717444U patent/CN201960714U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009583A (en) * | 2012-12-19 | 2013-04-03 | 盐城纺织职业技术学院 | Mould for ejecting mechanism of divided-board type ejector sleeve |
| CN104290315A (en) * | 2014-09-28 | 2015-01-21 | 苏州华冲精密机械有限公司 | Novel core-pulling and demoulding mechanism of vacuum plastic suction mould for liner of refrigerator |
| CN104943072A (en) * | 2015-06-30 | 2015-09-30 | 贾玉平 | Plastic injection mold for forming deep-rib products |
| CN107599325A (en) * | 2017-09-14 | 2018-01-19 | 上海小糸车灯有限公司 | A kind of secondary ejecting mechanism in lamp housing mould |
| CN107599325B (en) * | 2017-09-14 | 2020-07-21 | 华域视觉科技(上海)有限公司 | Secondary ejection mechanism in lamp shell mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Slow ejection structure with complex structure and multiple pitched roof products Effective date of registration: 20150825 Granted publication date: 20110907 Pledgee: Haidian Beijing science and technology enterprise financing Company limited by guarantee Pledgor: Beijing Libo Technology Ltd. Registration number: 2015990000715 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Beijing City Hengtong road 101500 Miyun Miyun Industrial Development Zone No. 3 Patentee after: Beijing force standard cause Polytron Technologies Inc Address before: Beijing City Hengtong road 101500 Miyun Miyun Industrial Development Zone No. 3 Patentee before: Beijing Libo Technology Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110907 |
|
| CX01 | Expiry of patent term |